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Fixed some technical problems with smart pointer support uncovered by

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STLPort's debug mode. Unfortunately, had to expand Dereferenceable
requirements.


[SVN r16459]
This commit is contained in:
Dave Abrahams
2002-11-29 22:43:27 +00:00
parent bbef71dc7d
commit 43a9571b2c
2 changed files with 36 additions and 3 deletions
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22
include/boost/python/object/pointer_holder.hpp
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@@ -32,6 +32,18 @@
namespace boost { namespace python { namespace objects {
template <class T>
typename bool is_null(T const& p, ...)
{
return p.get() == 0;
}
template <class T>
bool is_null(T* p, int)
{
return p == 0;
}
# define BOOST_PYTHON_UNFORWARD_LOCAL(z, n, _) BOOST_PP_COMMA_IF(n) (typename unforward<A##n>::type)(a##n)
template <class Pointer, class Value>
@@ -98,9 +110,12 @@ void* pointer_holder<Pointer, Value>::holds(type_info dst_t)
if (dst_t == python::type_id<Pointer>())
return &this->m_p;
if (objects::is_null(this->m_p, 0))
return 0;
type_info src_t = python::type_id<Value>();
return src_t == dst_t ? &*this->m_p
: find_dynamic_type(&*this->m_p, src_t, dst_t);
Value* p = &*this->m_p;
return src_t == dst_t ? p : find_dynamic_type(p, src_t, dst_t);
}
template <class Pointer, class Value>
@@ -109,6 +124,9 @@ void* pointer_holder_back_reference<Pointer, Value>::holds(type_info dst_t)
if (dst_t == python::type_id<Pointer>())
return &this->m_p;
if (objects::is_null(this->m_p, 0))
return 0;
if (dst_t == python::type_id<held_type>())
return &*this->m_p;